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ChemComm Unit 2A
Test Description: ChemComm
Instructions: Answer all questions to get your test result.
1) a property that can be observed or measured without changing the identity of the sample of matter
A
group or family
B
physical property
C
chemical property
D
atomic number
2) a change in matter in which the identity of the material involved does not change
A
metalloids
B
chemical change
C
isotopes
D
physical change
3) a property only observed or measured by changing the chemical identity of a sample of matter
A
isotopes
B
chemical property
C
atomic number
D
physical property
4) an interaction of matter that results in the formation of one or more new substances
A
physical change
B
nonmetal
C
atomic mass
D
chemical change
5) a chemical reaction with oxygen gas that produces thermal energy and light; burning
A
brittle
B
luster
C
combustion
D
malleable
6) a property of a material that permits it to be stretched into a wire without breaking
A
ductile
B
luster
C
brittle
D
combustion
7) the reflection of light from the surface of a material
A
luster
B
brittle
C
combustion
D
ductile
8) a material possessing properties such as luster, ductility, conductivity, and malleability
A
metalloids
B
isotopes
C
nonmetal
D
metal
9) a material possessing properties such as brittleness, lack of luster, and nonconductivity; nonmetals are often insulators
A
ductile
B
nonmetal
C
metal
D
metalloids
10) materials with properties intermediate between those of metals and nonmetals
A
metalloids
B
alkali metal family
C
halogen family
D
isotopes
11) a material that allows electricity to flow through it
A
conductor
B
isotopes
C
brittle
D
halogen family
12) a material possessing properties such as brittleness, lack of luster, and nonconductivity
A
metalloid
B
isotopes
C
nonconductor
D
metal
13) the property of a material that permits it to be flattened without shattering
A
malleable
B
brittle
C
ductile
D
luster
14) a property of a material that causes it to shatter under pressure
A
malleable
B
luster
C
ductile
D
brittle
15) the number of protons in an atom
A
mass number
B
isotopes
C
atomic number
D
group or family
16) the sum of the number of protons and neutrons in the nucleus of an atom of a particular isotope
A
mass number
B
atomic number
C
isotopes
D
group or family
17) atoms of the same element with differing numbers of neutrons
A
alkali metal family
B
isotopes
C
halogen family
D
nonconductor
18) a vertical column of elements in the periodic table
A
metalloids
B
isotopes
C
group or family
D
atomic number
19) the group of elements consisting of lithium, sodium, potassium, rubidium, cesium, and francium
A
alkali metal family
B
nonmetal
C
halogen family
D
isotopes
20) the group of elements consisting of fluorine, chlorine, bromine, iodine, and astatine
A
halogen family
B
alkali metal family
C
isotopes
D
metalloids
*select an answer for all questions
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